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https://hdl.handle.net/10356/85800
Title: | Development of MgO concrete with enhanced hydration and carbonation mechanisms | Authors: | Dung, N.T. Unluer, C. |
Keywords: | Hydration (A) MgO (D) |
Issue Date: | 2018 | Source: | Dung, N., & Unluer, C. (2018). Development of MgO concrete with enhanced hydration and carbonation mechanisms. Cement and Concrete Research, 103, 160-169. | Series/Report no.: | Cement and Concrete Research | Abstract: | This study proposed the use of hydration agent (HA) and seeds to improve the hydration and carbonation of reactive magnesium cement (RMC)-based concrete formulations. Hydration of RMC was evaluated by isothermal calorimetry. Water absorption and compressive strength results were used to assess the mechanical performance of RMC-based concrete samples. Quantification of hydrate and carbonate phases was performed via XRD and TGA. Formation and morphology of carbonates were observed via BSE and SEM. In addition to increasing the utilization of RMC in the carbonation reaction and facilitating early strength development, the use of HA formed large carbonate phases, while the addition of seeds improved sample microstructures via the development of dense carbonate networks. The improvements in morphology, microstructure and carbonate content in samples involving the simultaneous use of HA and seeds resulted in 56% lower water absorption values and 46% higher 28-day compressive strengths (70MPa) in comparison to the control sample. | URI: | https://hdl.handle.net/10356/85800 http://hdl.handle.net/10220/45366 |
ISSN: | 0008-8846 | DOI: | 10.1016/j.cemconres.2017.10.011 | Schools: | School of Civil and Environmental Engineering | Rights: | © 2017 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Cement and Concrete Research, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.cemconres.2017.10.011]." | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | CEE Journal Articles |
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Development of MgO concrete with enhanced hydration and carbonation mechanisms.pdf | 1.78 MB | Adobe PDF | View/Open |
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